Prior Propofol use

I just wanted to say that apparently it is known that MJ used propofol before on the History tour and he got an anaesthetist to administer it. It doesn't make any sense that he did not use someone trained in sedation again, the 'choices' that he made do not make any sense with reagrd to what he did previously. This is assuming Murray is telling the truth about the propofol usage and he didn't use a story to cover up a malicious motive...